<template>
<div>{{ message }}</div>
</template>

<script setup>
import { reactive,toRefs } from 'vue';
const obj= reactive({message:'我是xxx'})
let { message } =toRefs(obj)
setTimeout(()=>{
    message.value='我的学号是2025001'
},2000)
</script>

<style scoped></style>
